A National Cancer Institute-designated Comprehensive Cancer Center

Make an appointment: 800-826-HOPE
Forman, Stephen J., M.D., F.A.C.P. Bookmark and Share

Laboratory of Stephen J. Forman, M.D., F.A.C.P.

Advances in surgery, radiation therapy and chemotherapy over the last decade have increased the cure rates of a variety of malignancies.  For patients whose tumors are not eradicated, however, the impediment most frequently encountered is the inability to fully eliminate the minimal residual disease that frequently has acquired resistance to conventional treatment modalities.

A conceptually attractive strategy for targeting minimal residual disease is the manipulation of immunologic effector cells to specifically recognize tumor targets.  Animal models and an increasing number of clinical trials have implicated the T lymphocyte as a pivotal immunologic effector cell in antitumor immunity.  Technologies are now available for identifying T-cell target epitopes expressed by human tumors, isolating T cells for genetic modification to recognize these tumor targets, and then expanding these cells ex vivo to large numbers for reinfusion.  Initial clinical trials for lymphoma, leukemia and malignant glioma employing adoptive transfer of tumor-specific T cells have commenced at City of Hope.
 
T Cell Therapeutics Research Laboratory Members:
 
Christine Brown, Ph.D.
Associate Research Professor
Associate Director of TCTRL
cbrown@coh.org
626-256-HOPE (4673),ext. 63977

Elizabeth Budde, M.D., Ph.D.
Assistant Research Professor
Staff Physician
ebudde@coh.org
626-256-HOPE (4673),ext. 62407
 
Monique Dao, Ph.D.
Assistant Research Professor
mdao@coh.org
626-256-HOPE (4673),ext. 89317
 
Marissa Del Real, Ph.D.
Postdoctoral Fellow
mdelreal@coh.org
626-256-HOPE (4673),ext. 81962
 
Julie Ostberg, Ph.D.
Assistant Research Professor
Scientific Writer
Lab Research Regulatory Coordinator
jostberg@coh.org
626-256-HOPE (4673),ext. 65249
 
Saul Priceman, Ph.D.
Assistant Research Professor
spriceman@coh.org
626-256-HOPE (4673),ext. 64508
 
Sandra Thomas, Ph.D.
Staff Scientist
Scientific Writer
sthomas@coh.org
626-256-HOPE (4673),ext. 64182
 
Xiuli Wang, M.D., Ph.D.
Associate Research Professor
xiuwang@coh.org
626-256-HOPE (4673),ext. 63511
 
Lihong Weng, M.D.
Staff Scientist
lweng@coh.org
626-256-HOPE (4673),ext. 89060
 
Jingying Xu, Ph.D.
Staff Scientist
jixu@coh.org
626-256-HOPE (4673),ext. 63478
 
Brenda Aguilar, B.S.
Senior Research Associate
Animal Studies Supervisor
baguilar@coh.org
626-256-HOPE (4673),ext. 63927
 
Alfonso Brito, M.S.
Research Associate II
abrito@coh.org
626-256-HOPE (4673),ext. 63804
 
Wen Chung Chang, M.S.
Staff Scientist
Molecular Studies Supervisor
wchang@coh.org
626-256-HOPE (4673),ext. 64155

Brenda Chang, B.S.
Research Associate II
bchang@coh.org
626-256-HOPE (4673),ext. 63274
 
Ethan Gerdts, B.S.
Research Associate I
egerdts@coh.org
626-256-HOPE (4673),ext. 62153
 
Martha Gonzalez
Senior Administrative Support
mgonzalez@coh.org
626-256-HOPE (4673),ext. 60201
 
Rochelle Hernandez, B.S.
Research Associate II
rochernandez@coh.org
626-256-HOPE (4673),ext. 81962
 
Anita Kurien, MBS
Regulatory Affairs Specialist I
akurien@coh.org
626-256-HOPE (4673),ext. 60242
 
Araceli Naranjo, B.A.
Staff Scientist
Cell Manufacturing Supervisor
anaranjo@coh.org
626-256-HOPE (4673),ext. 64181
 
Adam Norris, B.S.
Clinical Research Coordinator II
anorris@coh.org
626-256-HOPE (4673),ext. 62312
 
Alina Oancea, M.D., M.S.
Research Associate II
aoancea@coh.org
626-256-HOPE (4673),ext. 64533
 
Anthony Park, M.S.
Intern
apark@coh.org
626-256-HOPE (4673),ext. 62153
 
Alexandra Pike
Trainee
apike@coh.org
626-256-HOPE (4673),ext. 62153
 
Lauren Quezada, M.S.
Research Associate II
lquezada@coh.org
626-256-HOPE (4673),ext. 64533
 
Aniee Sarkissian, M.S.
Research Associate II
asarkissian@coh.org
626-256-HOPE (4673),ext. 63927
 
Jennifer Simpson, B.A.
Clinical Research Coordinator III
jsimpson@coh.org
626-256-HOPE (4673),ext. 65087
 
Renate Starr, M.S.
Senior Research Associate
TCTRL Lab Manager
rstarr@coh.org
626-256-HOPE (4673),ext. 63274
 
Ellie Taus, B.S.
Research Associate I
etaus@coh.org
626-256-HOPE (4673),ext. 81937
 
Ryan Urak, M.S.
Research Associate II
rurak@coh.org
626-256-HOPE (4673),ext. 81937
 
Leonor Velasco
Research Lab Technician
lvelasco@coh.org
626-256-HOPE (4673),ext. 64184
 
Jamie Wagner, B.A.
Regulatory Affairs Specialist III
Clinical Research Regulatory Coordinator
jwagner@coh.org
626-256-HOPE (4673),ext. 60056
 
Laurelin Wolfenden, B.S.
Research Associate I
lwolfenden@coh.org
626-256-HOPE (4673),ext. 64533

Winnie Wong, B.S.
Senior Research Associate
wiwong@coh.org
626-256-HOPE (4673),ext. 81937
 
Sarah Wright, B.S.
Research Associate I
sawright@coh.org
626-256-HOPE (4673),ext. 63804
 
Yubo Zhai, B.S.
Research Associate I
yzhai@coh.org
626-256-HOPE (4673),ext. 89060

Stephen J. Forman, M.D., F.A.C.P. Research

Adoptive Immunotherapy
Advances in surgery, radiation therapy and chemotherapy over the last decade have increased the cure rates of a variety of malignancies. For patients whose tumors are not eradicated, however, the impediment most frequently encountered is the inability to fully eliminate the minimal residual disease that often has acquired resistance to conventional treatment modalities. An attractive strategy for targeting minimal residual disease is the manipulation of immunologic effector cells to specifically recognize tumor targets. Animal models and an increasing number of clinical trials have implicated the T lymphocyte as a pivotal immunologic effector cell in anti-tumor immunity. This has led to our overall interest in using adoptive immunotherapy of T-cells to target cancer, specifically leukemia/lymphoma, brain tumors and neuroblastoma. Areas of focus in our research program are outlined below.
 
Glioma tumor cells are killed by therapeutic T-cells
Scanning of zetakine redirected cytolytic T-cell lysis of a glioma tumor cell.
 
Genetic Modification of T-cells for Redirected Tumor Recognition
Technologies are now available for identifying immunogenic T-cell target epitopes expressed by human tumors, isolating antigen-specific T-cells and expanding them ex vivo to large numbers for reinfusion. However, to overcome the difficulties of isolating tumor-reactive T-cells from cancer patients, we have developed technology to take T-cells from a cancer patient and reprogram them to target a patient’s cancer through genetic engineering strategies using DNA electroporation and/or lentiviral transduction. Previous studies by our laboratory have provided proof of principle that CTL can be engineered to specifically target lymphoma, neuroblastoma, and glioma tumors via expression of tumor-specific chimeric immunoreceptors resulting in MHC-independent killing of target tumor cells (Cooper et al, Blood 2003; Park et al, Mol Therapy 2007; Kahlon et al, Cancer Res 2004). More recently, we have completed pre-clinical studies of cytotoxic T-cells (CTLs) genetically modified to express an IL13-zetakine chimeric immunoreceptor to target cell-surface IL13Rα2 on medulloblastoma/primitive neuroectodermal tumors, the most common type of brain tumor in children (Stastny et al, J Ped Hematol Oncol 2007). Overall, we are currently involved in studying the potential clinical utility of adoptively transferring T-cells that have been genetically redirected to recognize CD19 (on leukemia and lymphoma); IL13Ra2 (on glioblastoma and medulloblastoma); L1-CAM (on neuroblastoma, lung cancer, and renal cell carcinoma); HER2 (on breast cancer, brain metastases and medulloblastoma); or alpha-3 integrin (on medulloblastoma).
 
 
Murine Xenograft ModelsSurgical suite
To monitor the therapeutic objectives of adoptive T-cell transfer before entering the clinical setting, our lab has developed multiple murine xenograft models. For example, we are now routinely performing stereotactic surgeries in mice for the intracranial injection of human brain tumors to mimic the situation of our patients. In addition, we have also developed lymphoma, neuroblastoma, and medulloblastoma murine xenograft models. Bioluminescent strategies have also been developed by our group for the in vivo imaging of both T-cells and tumors. Our utilization of the firefly and renilla luciferase genes (ffLuc and rLuc, respectively) along with the Xenogen system for serial imaging of anesthetized mice has been critically important for evaluating our animal studies. Specifically, these animal model systems are being used for studying the efficacy of immunotherapy, T-cell trafficking from tail vein injections, contralateral homing of T-cells to tumors within the parenchyma of the brain, and studies of T-cell persistence and proliferation.
 
Trafficking of Adoptively Transferred T-cells
To exert a therapeutic effect, adoptively transferred tumor-specific cytotoxic T-cells (CTLs) must traffic to sites of tumor burden, exit the circulation, and infiltrate the tumor microenvironment. T-cells are able to respond to migration directing chemicals, called chemokines, that are produced by tumor cells. Thus our group has begun to examine the ability of adoptively transferred human CTLs to traffic to tumors. Using a combination of in vivo tumor tropism studies, and in vitro biophotonic chemotaxis assays, we observed that tumors that produce CCL2/MCP1 (>10ng/ml), such as cell lines derived from glioma and medulloblastoma, efficiently chemoattract ex vivo expanded primary human T-cells. These studies suggest that the capacity of adoptively transferred T-cells to home to tumors may be influenced in part by the species and amounts of tumor-derived chemokines, in particular MCP-1 (Brown et al, J Immunol 2007).
 
Targeting Tumor Progenit or Cells with Genetically Engineered Effector T-Cells
Recent hypotheses that tumors arise from cancer stem cells which appear to be resistant to radiation treatment and chemotherapy have also led us to begin to isolate and expand stem cells from human glioma to assess the vulnerability of these cells to T-cell mediated killing in our adoptive immunotherapy models. Our initial studies demonstrate that chimeric immunoreceptor redirected IL13Rα2-specific CTL, currently being evaluated in an FDA-approved pilot Phase I trial for the treatment of recurrent/refractory malignant glioma, can kill cancer stem/progenitor cells in vitro, and reduce engrafted potential of the glioma stem/progenitor population in an orthotopic murine tumor model. Current models now predict that curative therapies for many cancers might require the elimination of the stem/progenitor population, and these studies lay the foundation for an immunotherapy approach to achieve this goal.
 
Development of Strategies to Optimize T-cell Anti-Tumor Activity in Vivo
Our group has also begun to investigate the expression of additional gene products in T-cells that may serve to overcome constraints on T-cell effector function and survival in vivo. For example, we are currently examining the efficacy of providing co-stimulatory signaling to T-cells through integration of costimulatory signaling domains within a tumor targeting chimeric antigen receptor.  Our recent studies in this area demonstrate that integrating costimulation with activation signaling events is important for fully activating CD4+ anti-tumor effector cells, resulting in sustained function in the tumor microenvironment.
 
Another strategy we are currently examining is the utility of genetically modifying T-cells which have first been selected for specificity to viruses such as CMV or EBV, which would allow for endogenous stimulation of these T-cells upon their transfer to patients infected with these viruses that are frequently reactivated in infected hosts. We would also predict that such a combinatorial bispecific T-cell strategy would permit the selective isolation of virus specific memory T-cells as recipients of chimeric antigen receptor genes for improved in vivo persistence following adoptive transfer. In fact, studies on the unique engraftment potential of memory T-cells are also being carried out in primates in collaboration with Dr. Berger at the Fred Hutchison Cancer Research Center in Seattle, WA. Because tumors can avoid immune-mediated elimination by production of immunosuppressive cytokines (e.g., TGF-b), our group is also evaluating strategies by which T-cells may be rendered resistant to such immunosupression. One project is the development of interference RNA sequences that could decrease this susceptibility of T-cells to tumor-mediated suppression. In collaboration with Sangamo Biosciences in Richmond, CA, we are also interested in studying the effects of genetically blocking glucocorticoid sensitivity of the tumor specific T-cells because post-operative brain cancer patients are routinely treated with immunosuppressive steroids (i.e., glucocorticoids) to reduce clinical symptoms of edema.
 
Lastly, another group of projects underway in the lab are examining ways of generating gene products that influence the expression of cytokines such as IL-2 and IL-7 which help promote the survival of T-cells and are critical for generating T-cell memory responses. A new collaboration with Dr. Smolke in the Chemical Engineering Department at CalTech involves the development of RNA regulating systems that are inducible by drugs such as tetracycline to control the expression of cytokines in T-cells which will promote their proliferation and survival.
 
Overall, the recent progress and current directions of Dr. Forman’s research group have generated much enthusiasm and support at City of Hope. The laboratory and office space in the Arnold and Mabel Beckman Center for Cancer Immunotherapeutics & Tumor Immunology is located in the heart of City of Hope. This state-of-the-art center is dedicated to immunotherapy and facilitates collaboration between lab researchers and clinicians, and rapidly moves scientific discoveries from the lab to patients.
 
 

Forman, Stephen J., M.D., F.A.C.P.

Laboratory of Stephen J. Forman, M.D., F.A.C.P.

Advances in surgery, radiation therapy and chemotherapy over the last decade have increased the cure rates of a variety of malignancies.  For patients whose tumors are not eradicated, however, the impediment most frequently encountered is the inability to fully eliminate the minimal residual disease that frequently has acquired resistance to conventional treatment modalities.

A conceptually attractive strategy for targeting minimal residual disease is the manipulation of immunologic effector cells to specifically recognize tumor targets.  Animal models and an increasing number of clinical trials have implicated the T lymphocyte as a pivotal immunologic effector cell in antitumor immunity.  Technologies are now available for identifying T-cell target epitopes expressed by human tumors, isolating T cells for genetic modification to recognize these tumor targets, and then expanding these cells ex vivo to large numbers for reinfusion.  Initial clinical trials for lymphoma, leukemia and malignant glioma employing adoptive transfer of tumor-specific T cells have commenced at City of Hope.
 
T Cell Therapeutics Research Laboratory Members:
 
Christine Brown, Ph.D.
Associate Research Professor
Associate Director of TCTRL
cbrown@coh.org
626-256-HOPE (4673),ext. 63977

Elizabeth Budde, M.D., Ph.D.
Assistant Research Professor
Staff Physician
ebudde@coh.org
626-256-HOPE (4673),ext. 62407
 
Monique Dao, Ph.D.
Assistant Research Professor
mdao@coh.org
626-256-HOPE (4673),ext. 89317
 
Marissa Del Real, Ph.D.
Postdoctoral Fellow
mdelreal@coh.org
626-256-HOPE (4673),ext. 81962
 
Julie Ostberg, Ph.D.
Assistant Research Professor
Scientific Writer
Lab Research Regulatory Coordinator
jostberg@coh.org
626-256-HOPE (4673),ext. 65249
 
Saul Priceman, Ph.D.
Assistant Research Professor
spriceman@coh.org
626-256-HOPE (4673),ext. 64508
 
Sandra Thomas, Ph.D.
Staff Scientist
Scientific Writer
sthomas@coh.org
626-256-HOPE (4673),ext. 64182
 
Xiuli Wang, M.D., Ph.D.
Associate Research Professor
xiuwang@coh.org
626-256-HOPE (4673),ext. 63511
 
Lihong Weng, M.D.
Staff Scientist
lweng@coh.org
626-256-HOPE (4673),ext. 89060
 
Jingying Xu, Ph.D.
Staff Scientist
jixu@coh.org
626-256-HOPE (4673),ext. 63478
 
Brenda Aguilar, B.S.
Senior Research Associate
Animal Studies Supervisor
baguilar@coh.org
626-256-HOPE (4673),ext. 63927
 
Alfonso Brito, M.S.
Research Associate II
abrito@coh.org
626-256-HOPE (4673),ext. 63804
 
Wen Chung Chang, M.S.
Staff Scientist
Molecular Studies Supervisor
wchang@coh.org
626-256-HOPE (4673),ext. 64155

Brenda Chang, B.S.
Research Associate II
bchang@coh.org
626-256-HOPE (4673),ext. 63274
 
Ethan Gerdts, B.S.
Research Associate I
egerdts@coh.org
626-256-HOPE (4673),ext. 62153
 
Martha Gonzalez
Senior Administrative Support
mgonzalez@coh.org
626-256-HOPE (4673),ext. 60201
 
Rochelle Hernandez, B.S.
Research Associate II
rochernandez@coh.org
626-256-HOPE (4673),ext. 81962
 
Anita Kurien, MBS
Regulatory Affairs Specialist I
akurien@coh.org
626-256-HOPE (4673),ext. 60242
 
Araceli Naranjo, B.A.
Staff Scientist
Cell Manufacturing Supervisor
anaranjo@coh.org
626-256-HOPE (4673),ext. 64181
 
Adam Norris, B.S.
Clinical Research Coordinator II
anorris@coh.org
626-256-HOPE (4673),ext. 62312
 
Alina Oancea, M.D., M.S.
Research Associate II
aoancea@coh.org
626-256-HOPE (4673),ext. 64533
 
Anthony Park, M.S.
Intern
apark@coh.org
626-256-HOPE (4673),ext. 62153
 
Alexandra Pike
Trainee
apike@coh.org
626-256-HOPE (4673),ext. 62153
 
Lauren Quezada, M.S.
Research Associate II
lquezada@coh.org
626-256-HOPE (4673),ext. 64533
 
Aniee Sarkissian, M.S.
Research Associate II
asarkissian@coh.org
626-256-HOPE (4673),ext. 63927
 
Jennifer Simpson, B.A.
Clinical Research Coordinator III
jsimpson@coh.org
626-256-HOPE (4673),ext. 65087
 
Renate Starr, M.S.
Senior Research Associate
TCTRL Lab Manager
rstarr@coh.org
626-256-HOPE (4673),ext. 63274
 
Ellie Taus, B.S.
Research Associate I
etaus@coh.org
626-256-HOPE (4673),ext. 81937
 
Ryan Urak, M.S.
Research Associate II
rurak@coh.org
626-256-HOPE (4673),ext. 81937
 
Leonor Velasco
Research Lab Technician
lvelasco@coh.org
626-256-HOPE (4673),ext. 64184
 
Jamie Wagner, B.A.
Regulatory Affairs Specialist III
Clinical Research Regulatory Coordinator
jwagner@coh.org
626-256-HOPE (4673),ext. 60056
 
Laurelin Wolfenden, B.S.
Research Associate I
lwolfenden@coh.org
626-256-HOPE (4673),ext. 64533

Winnie Wong, B.S.
Senior Research Associate
wiwong@coh.org
626-256-HOPE (4673),ext. 81937
 
Sarah Wright, B.S.
Research Associate I
sawright@coh.org
626-256-HOPE (4673),ext. 63804
 
Yubo Zhai, B.S.
Research Associate I
yzhai@coh.org
626-256-HOPE (4673),ext. 89060

Research

Stephen J. Forman, M.D., F.A.C.P. Research

Adoptive Immunotherapy
Advances in surgery, radiation therapy and chemotherapy over the last decade have increased the cure rates of a variety of malignancies. For patients whose tumors are not eradicated, however, the impediment most frequently encountered is the inability to fully eliminate the minimal residual disease that often has acquired resistance to conventional treatment modalities. An attractive strategy for targeting minimal residual disease is the manipulation of immunologic effector cells to specifically recognize tumor targets. Animal models and an increasing number of clinical trials have implicated the T lymphocyte as a pivotal immunologic effector cell in anti-tumor immunity. This has led to our overall interest in using adoptive immunotherapy of T-cells to target cancer, specifically leukemia/lymphoma, brain tumors and neuroblastoma. Areas of focus in our research program are outlined below.
 
Glioma tumor cells are killed by therapeutic T-cells
Scanning of zetakine redirected cytolytic T-cell lysis of a glioma tumor cell.
 
Genetic Modification of T-cells for Redirected Tumor Recognition
Technologies are now available for identifying immunogenic T-cell target epitopes expressed by human tumors, isolating antigen-specific T-cells and expanding them ex vivo to large numbers for reinfusion. However, to overcome the difficulties of isolating tumor-reactive T-cells from cancer patients, we have developed technology to take T-cells from a cancer patient and reprogram them to target a patient’s cancer through genetic engineering strategies using DNA electroporation and/or lentiviral transduction. Previous studies by our laboratory have provided proof of principle that CTL can be engineered to specifically target lymphoma, neuroblastoma, and glioma tumors via expression of tumor-specific chimeric immunoreceptors resulting in MHC-independent killing of target tumor cells (Cooper et al, Blood 2003; Park et al, Mol Therapy 2007; Kahlon et al, Cancer Res 2004). More recently, we have completed pre-clinical studies of cytotoxic T-cells (CTLs) genetically modified to express an IL13-zetakine chimeric immunoreceptor to target cell-surface IL13Rα2 on medulloblastoma/primitive neuroectodermal tumors, the most common type of brain tumor in children (Stastny et al, J Ped Hematol Oncol 2007). Overall, we are currently involved in studying the potential clinical utility of adoptively transferring T-cells that have been genetically redirected to recognize CD19 (on leukemia and lymphoma); IL13Ra2 (on glioblastoma and medulloblastoma); L1-CAM (on neuroblastoma, lung cancer, and renal cell carcinoma); HER2 (on breast cancer, brain metastases and medulloblastoma); or alpha-3 integrin (on medulloblastoma).
 
 
Murine Xenograft ModelsSurgical suite
To monitor the therapeutic objectives of adoptive T-cell transfer before entering the clinical setting, our lab has developed multiple murine xenograft models. For example, we are now routinely performing stereotactic surgeries in mice for the intracranial injection of human brain tumors to mimic the situation of our patients. In addition, we have also developed lymphoma, neuroblastoma, and medulloblastoma murine xenograft models. Bioluminescent strategies have also been developed by our group for the in vivo imaging of both T-cells and tumors. Our utilization of the firefly and renilla luciferase genes (ffLuc and rLuc, respectively) along with the Xenogen system for serial imaging of anesthetized mice has been critically important for evaluating our animal studies. Specifically, these animal model systems are being used for studying the efficacy of immunotherapy, T-cell trafficking from tail vein injections, contralateral homing of T-cells to tumors within the parenchyma of the brain, and studies of T-cell persistence and proliferation.
 
Trafficking of Adoptively Transferred T-cells
To exert a therapeutic effect, adoptively transferred tumor-specific cytotoxic T-cells (CTLs) must traffic to sites of tumor burden, exit the circulation, and infiltrate the tumor microenvironment. T-cells are able to respond to migration directing chemicals, called chemokines, that are produced by tumor cells. Thus our group has begun to examine the ability of adoptively transferred human CTLs to traffic to tumors. Using a combination of in vivo tumor tropism studies, and in vitro biophotonic chemotaxis assays, we observed that tumors that produce CCL2/MCP1 (>10ng/ml), such as cell lines derived from glioma and medulloblastoma, efficiently chemoattract ex vivo expanded primary human T-cells. These studies suggest that the capacity of adoptively transferred T-cells to home to tumors may be influenced in part by the species and amounts of tumor-derived chemokines, in particular MCP-1 (Brown et al, J Immunol 2007).
 
Targeting Tumor Progenit or Cells with Genetically Engineered Effector T-Cells
Recent hypotheses that tumors arise from cancer stem cells which appear to be resistant to radiation treatment and chemotherapy have also led us to begin to isolate and expand stem cells from human glioma to assess the vulnerability of these cells to T-cell mediated killing in our adoptive immunotherapy models. Our initial studies demonstrate that chimeric immunoreceptor redirected IL13Rα2-specific CTL, currently being evaluated in an FDA-approved pilot Phase I trial for the treatment of recurrent/refractory malignant glioma, can kill cancer stem/progenitor cells in vitro, and reduce engrafted potential of the glioma stem/progenitor population in an orthotopic murine tumor model. Current models now predict that curative therapies for many cancers might require the elimination of the stem/progenitor population, and these studies lay the foundation for an immunotherapy approach to achieve this goal.
 
Development of Strategies to Optimize T-cell Anti-Tumor Activity in Vivo
Our group has also begun to investigate the expression of additional gene products in T-cells that may serve to overcome constraints on T-cell effector function and survival in vivo. For example, we are currently examining the efficacy of providing co-stimulatory signaling to T-cells through integration of costimulatory signaling domains within a tumor targeting chimeric antigen receptor.  Our recent studies in this area demonstrate that integrating costimulation with activation signaling events is important for fully activating CD4+ anti-tumor effector cells, resulting in sustained function in the tumor microenvironment.
 
Another strategy we are currently examining is the utility of genetically modifying T-cells which have first been selected for specificity to viruses such as CMV or EBV, which would allow for endogenous stimulation of these T-cells upon their transfer to patients infected with these viruses that are frequently reactivated in infected hosts. We would also predict that such a combinatorial bispecific T-cell strategy would permit the selective isolation of virus specific memory T-cells as recipients of chimeric antigen receptor genes for improved in vivo persistence following adoptive transfer. In fact, studies on the unique engraftment potential of memory T-cells are also being carried out in primates in collaboration with Dr. Berger at the Fred Hutchison Cancer Research Center in Seattle, WA. Because tumors can avoid immune-mediated elimination by production of immunosuppressive cytokines (e.g., TGF-b), our group is also evaluating strategies by which T-cells may be rendered resistant to such immunosupression. One project is the development of interference RNA sequences that could decrease this susceptibility of T-cells to tumor-mediated suppression. In collaboration with Sangamo Biosciences in Richmond, CA, we are also interested in studying the effects of genetically blocking glucocorticoid sensitivity of the tumor specific T-cells because post-operative brain cancer patients are routinely treated with immunosuppressive steroids (i.e., glucocorticoids) to reduce clinical symptoms of edema.
 
Lastly, another group of projects underway in the lab are examining ways of generating gene products that influence the expression of cytokines such as IL-2 and IL-7 which help promote the survival of T-cells and are critical for generating T-cell memory responses. A new collaboration with Dr. Smolke in the Chemical Engineering Department at CalTech involves the development of RNA regulating systems that are inducible by drugs such as tetracycline to control the expression of cytokines in T-cells which will promote their proliferation and survival.
 
Overall, the recent progress and current directions of Dr. Forman’s research group have generated much enthusiasm and support at City of Hope. The laboratory and office space in the Arnold and Mabel Beckman Center for Cancer Immunotherapeutics & Tumor Immunology is located in the heart of City of Hope. This state-of-the-art center is dedicated to immunotherapy and facilitates collaboration between lab researchers and clinicians, and rapidly moves scientific discoveries from the lab to patients.
 
 
Our Scientists

Our research laboratories are led by the best and brightest minds in scientific research.
 

Beckman Research Institute of City of Hope is internationally  recognized for its innovative biomedical research.
City of Hope is one of only 41 Comprehensive Cancer Centers in the country, the highest designation awarded by the National Cancer Institute to institutions that lead the way in cancer research, treatment, prevention and professional education.
Learn more about City of Hope's institutional distinctions, breakthrough innovations and collaborations.
Develop new therapies, diagnostics and preventions in the fight against cancer and other life-threatening diseases.
 
Support Our Research
By giving to City of Hope, you support breakthrough discoveries in laboratory research that translate into lifesaving treatments for patients with cancer and other serious diseases.
 
 
 
 


NEWS & UPDATES
  • Surgery for head and neck cancers is unarguably complex, requiring extremely controlled movements and exceptional training. “Given where we are operating, our primary concern is maintaining speaking, swallowing and breathing,” said Ellie Maghami, M.D., chief of head and neck surgery, who recently teamed with Ro...
  • Henry Ford said it well: “Working together is success.” For biomedical researchers, this is especially true. The challenges they face often require expertise from multiple fields to find answers and solutions. Scientists seeking cures for type 1 diabetes in particular must overcome biological, medical and techn...
  • Superheroes are making plenty of headlines as the summer blockbuster season opens. At City of Hope, a 9-year-old girl wept as she hugged her own superhero: someone who had the superpower of healing her cancer. He didn’t wear flashy armor or a cape, but rather a plaid shirt. He doesn’t have a secret ...
  • Known for his ability to bring together, and lead, effective research teams, world-renowned translational research scientist and physician Larry W. Kwak, M.D., Ph.D., has joined City of Hope in a key leadership role within the institution’s new Hematologic Malignancies and Stem Cell Transplantation Instit...
  • To detect melanoma, the most deadly form of skin cancer, at its earliest, most treatable stage, conduct a head-to-toe skin self-examination once a month to check for suspicious moles.   Unusual, or atypical, moles can ultimately develop into skin cancer. Here is the ABCDE guide to potentially cancerous mol...
  • “Superheroes,” “grateful” and “lifesavers”: All are words patients have used to describe their bone marrow donors. For donors, “a great feeling” and “the right thing to do” seems to sum up their view of donating the stem cells used to save someone’s life. Bone marrow transplants of...
  • Updated: May 1, 2015 More than a decade after joining the bone marrow registry during a blood drive at the United States Military Academy at West Point, Phil Ratcliff received a call that he was a match for a leukemia patient. By then, he’d left his military career to start his own financial business, married [...
  • Updated: May 1. For Lars Nijland, the reason to become a member of a bone marrow registry was simple. “I always thought there would be no easier way to save somebody’s life,” said the 24-year-old student at Germany’s University of Goettingen, who signed up for the registry during a drive on his campus. Ni...
  • Updated: May 1 No parent ever wants to see their child hurting or sick in any way. Joanne Cooper’s daughter Amanda wasn’t sick, though. She seemed healthy. Vibrant. A straight-A student whose only major health ailment had been bouts of stress-related nausea. Then a blood test revealed that Amanda – now 9 years ...
  • Noe Chavez became animated when he recalled the story: “We were running a health event, screening folks for diabetes,” said the enthusiastic City of Hope population health researcher, “and this man comes over and starts talking to us about the trouble he’s having with his eyes. I spoke with him, listened ...
  • When Keith McKinny, 29, was first diagnosed with lymphoma and leukemia in 2010, the first person he thought of was former boyfriend Jason Mullins. The two hadn’t been in contact with each other for some time, but McKinny couldn’t think of anyone else with whom he wanted to be during that difficult period....
  • Updated: May 1 Yesenia Portillo’s search for a bone marrow donor started close to home. Her brother, sister and seven cousins all underwent testing, but none of them were a close enough match to donate the bone marrow stem cells she desperately needed for her transplant. Yesenia, now almost 16, had always been ...
  • Some of City of Hope’s most high-impact achievements have arisen from City of Hope’s globally recognized bone marrow transplant (BMT) program. The annual Karl G. Blume – Gerhard Schmidt Memorial Lecture in Transplantation Biology & Medicine — commemorating two of the most influential and revered...
  • Guido Marcucci, M.D., wants to put himself out of business. A respected clinician and esteemed basic and translational scientist, Marcucci joins City of Hope as co-director of the Gehr Family Center for Leukemia Research within the Hematologic Malignancies and Stem Cell Transplantation Institute. In this positi...
  • To say that myelofibrosis patients need more treatment options would be an understatement. The severely low platelet counts, known as thrombocytopenia, that are one of the hallmark symptoms of the disease can lead to chronic fatigue and weakness that not only damage quality of life but, ultimately, shorten life...