What are Collaborative Projects (CPs)? CPs are external projects that align with the aims of TR&D1-3 (see above), and can benefit from support from the P41 Center. In general, the P41 Center will provide microsystems scanning mechanisms, fiber-coupled imaging instruments, and advanced image processing algorithms that offer a significant performance advantage by comparison over that used currently by the CP (push). The University of Michigan offers resources and expertise to develop these in vivo imaging technologies that are not readily available at other institutions. In return, the CPs provide a broad range of testbeds to rigorously verify the Center’s imaging solutions, and offer unique biomedical applications to identify new directions to further advance development of Center technologies (pull). We expect these collaborations to lead to new funding opportunities, joint publications, and intellectual property to further advance this direction.
Collaborating Investigator/Institution: Cui, Meng PhD, Johns Hopkins University
Grant number: U01NS118302
Project period dates: 09/20-11/25
The CP is developing a multiphoton imaging system to monitor neuronal activity in sub-cortical brain structures in freely moving animals. The CP will be able to substantially reduce the size and weight of their microscope by using microsystems scan mechanisms rather than bulky components. This advance will accelerate in vivo imaging of neuronal activity in freely moving rather than immobilized animals.
Collaborating Investigator/Institution: Hasan, Tayyaba, Massachusetts General Hospital (MGH)
Grant number: R01CA231606
Project period dates: 04/19/21 – 03/31/26
The CP has developed a novel theranostic agent for oral cancers. The CP will be able to evaluate the therapeutic efficacy of their dual function construct in the oral cavity of live mice. This advance will enable in vivo uptake and pharmacokinetics of their novel theranostic agent to be evaluated in orthotopic tumors using intravenous administration.
Collaborating Investigator/Institution: Richards-Kortum, Rebecca R PhD, Rice University
Grant number: R01CA252245
Project period dates: 07/01/21 – 06/30/26
A reusable video capsule is being developed as a low cost solution for less experienced providers to perform high‐resolution cancer surveillance in community‐based (US) and low‐resource (global) settings. The CP will be able to markedly reduce the dimensions of a video capsule by replacing a bulky electromagnetic motor with a parametric resonance scanner. Swallowing will become much easier, and patient compliance with cancer surveillance will increase in community‐based and low‐resource settings.
Collaborating Investigator/Institution: Herzog, Erik PhD, Washington University at St. Louis
Grant number: R01NS121161
Project period dates: 12/01/21 – 11/31/26
Neurons in the motor cortex are now known to synchronize with daily cycles of glucocorticoid release. However, the precise mechanism that stimulates hormone secretion is unclear. The CP will be able to monitor brain cell activities in freely behaving rather than immobilized mice. This advance will generate more relevant in vivo data to elucidate the precise mechanisms that result in stimulation of glucocorticoid release to determine daily circadian rhythms.
Collaborating Investigator/Institution: Chen, Wei, University of Oklahoma
Grant number: R01CA269897
Project period dates: 04/01/22 – 03/31/27
Pancreatic cancers are very challenging to treat because of poor drug permeability. The CP has developed a novel therapy that combines ablative photothermal therapy with administration of local immunostimulants to induce a tumor-specific immune response, including infiltration, activation, and proliferation of T-cells in the tumor microenvironment (TME). The CP will be able to visualize cell-cell interactions in the pancreatic TME over time following administration of therapy. This advance will be able to track position, behavior, and movement of individual cells to provide new opportunities to design effective immunotherapies for pancreatic cancer.
Collaborating Investigator/Institution: Rosenthal, Eben MD, Vanderbilt University
Grant number: R01CA266233
Project period dates: 08/01/22 – 07/31/27
Surgical resection of cancer requires clean tumor margins to reduce risk for local recurrence, decrease patient morbidity, and increase overall disease-free survival. EGFR is commonly overexpressed in squamous cell carcinoma of the head & neck, and contributes to cancer cell proliferation, survival, and metastases. The CP will be able to detect in vivo uptake of panitumumab-IRDye800CW by head & neck tumor cells with tissue depths >20 mm. This advance will enable more complete surgical resection of the tumor margin to reduce risk for local recurrence, decrease patient morbidity, and increase disease-free survival.
Collaborating Investigator/Institution: Gibbs, Summer PhD, Oregon Health Science University
Grant number: R01NS129121
Project period dates: 12/01/22 – 11/30/27
Surgeons must exercise extreme caution to avoid damage to vital nerve structures. Injury to cranial nerves, in particular, can lead to debilitating sensory deficits, motor dysfunction, and phantom pain. The CP is developing oxazine-based contrast agents that accumulate specifically in nerve structures, and can be used in real time during surgery to visualize cranial nerve anatomy. The CP will be able to characterize in vivo uptake and pharmacokinetics of their oxazine-based contrast agents by cranial nerves with tissue depths >20 mm. This advance will enable surgeons to have greater visualization of nerve structures and avoid injury during resection.
Collaborating Investigator/Institution: Rajadhyaksha, Milind PhD, Memorial Sloan-Kettering
Grant number: R01CA275789
Project period dates: 08/15/23 – 07/31/28
The CP is developing a handheld reflectance confocal microscope (RCM) as a low cost solution to screen for oral cancer in patients in developing countries. Scanning is performed using a bulky galvo located in the handle, and results in a scan head (red arrow) with dimensions of 16×13×29 cm3 and weight >1.5 lbs. The CP will be able to markedly reduce the size and weight of their confocal microendoscope. This advance will enable providers in developing countries to have greater access in tight spaces of the oral cavity and improve effectiveness for low-cost cancer screening at the point-of-care.
Investigators interested in initiating a new CP can apply on-line here. Criteria for selection will include 1) a research question that can be addressed with use of Center imaging technologies, 2) a biomedical application that would benefit from fiber-coupled microendoscopes for in vivo imaging; 3) a line of experimentation that can adequately verify the performance of Center imaging technologies, and 4) identification of a meaningful push-pull relationship with one or more TR&D Project. CPs may rotate out of Center activities when 1) there is mutual agreement, 2) the project has been completed, or 3) funding has ended.