The Innate Immune System and TRAIL-BCL-XL Axis Mediate a Sex Bias in Lung Cancer and Confer a Therapeutic Vulnerability in Females.

There is a significant sex-bias in lung cancer with males showing increased mortality compared to females. A better mechanistic understanding of these differences could help identify therapeutic targets to personalize cancer therapies to each sex. After observing a clear sex-bias in humanized mice, with male patient-derived xenograft (PDX) lung tumors being more progressive and deadlier than female PDX lung tumors, we identified mouse tumor models of lung cancer with the same sex-bias. This sex-bias was not observed in models of breast, colon, melanoma, and renal cancers. In vivo, the sex-bias in growth and lethality required intact ovaries, functional innate natural killer (NK) cells and monocytes/macrophages, and the activating receptor NKG2D. Ex vivo cell culture models were sensitized to the anti-cancer effects of NKG2D-mediated NK cell and macrophage killing through the TRAIL-BCL-XL axis when cultured with serum from female mice with intact ovaries. In both flank and orthotopic models, the BCL-XL inhibitor navitoclax (ABT-263) improved tumor growth control in female mice and required NK cells, macrophages, and the TRAIL signaling pathway. This research suggests that navitoclax and TRAIL pathway agonists could be used as a personalized therapy to improve outcomes in women with lung cancer.

Use of photo methods in research studies with cancer survivors and their caregivers: a scoping review.

PURPOSE: Photo methods such as photo-elicitation and photovoice have traditionally been implemented as knowledge-generation techniques; however, they have also been conceptualized as tools for community impact and as interventions in and of themselves. We performed a scoping review to document how photo methods have been used in studies of cancer, to describe participant populations, and to identify opportunities for future directions for the use of photo methods in cancer. METHODS: An a priori search strategy was implemented across health-related databases with the following inclusion criteria: (1) study participants were diagnosed with cancer and/or were caregivers of those with cancer; (2) study participants were asked to take and/or respond to photographs as part of the study protocol; (3) articles were published in peer-reviewed journals; (4) articles were written in English. RESULTS: Eighty non-duplicative articles were identified; of these, 30 articles describing 24 individual studies were included for review. All but one (95.8%) of the studies utilized photovoice solely as a knowledge-generation technique without participant outcome measurement or analysis. Across all included studies, participants were largely women with breast cancer; other demographic and cancer-related variables (e.g., race and cancer stage) were not consistently reported. Caregivers were included in 37.5% of studies. CONCLUSION: Photo methods are most frequently used in order to capture qualitative data in cancer populations; however, there are missed opportunities in their lack of use for intervention and systemic change. In addition, inconsistent reporting of demographics and cancer characteristics limits our ability to synthesize these data across studies.